JP2011021793A - Water heater - Google Patents

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JP2011021793A
JP2011021793A JP2009166270A JP2009166270A JP2011021793A JP 2011021793 A JP2011021793 A JP 2011021793A JP 2009166270 A JP2009166270 A JP 2009166270A JP 2009166270 A JP2009166270 A JP 2009166270A JP 2011021793 A JP2011021793 A JP 2011021793A
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heat insulating
tank
vacuum heat
insulating material
vacuum
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Yoshikazu Koto
良和 厚東
Koji Shimazaki
幸治 島崎
Hidekatsu Fujita
英克 藤田
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Hitachi Appliances Inc
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Hitachi Appliances Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a water heater capable of suitably maintaining the temperature distribution of liquid in a tank and maintaining high heat insulating performance of the tank as a whole while suppressing a material used for a heat insulating part of the tank. <P>SOLUTION: In the water heater, the heat insulating part V including vacuum heat insulating parts 2, 3 is provided around the tank 1. The heat insulating part V is divided into a plurality of regions along the tank height direction. The vacuum heat insulating part 2 in the upper region out of the plurality of regions constituting the heat insulating part V is set thicker than the vacuum heat insulating part 3 in the region lower than the upper region. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、給湯機に関し、特に、タンクを真空断熱材によって断熱した給湯機に関する。   The present invention relates to a water heater, and more particularly to a water heater in which a tank is thermally insulated by a vacuum heat insulating material.

近年、タンクを真空断熱材によって断熱した給湯機が知られている(例えば、特許文献1)。   In recent years, a water heater in which a tank is insulated with a vacuum heat insulating material is known (for example, Patent Document 1).

このような給湯機では、タンクの上下に亘って真空断熱材を配置されている。また、このような給湯機では、真空断熱材の厚みは、タンクの高さ方向全体に亘って概ね一定とされるのが一般的である。   In such a water heater, the vacuum heat insulating material is arrange | positioned over the upper and lower sides of a tank. In such a water heater, the thickness of the vacuum heat insulating material is generally constant over the entire height direction of the tank.

特開2006−20077号公報JP 2006-20077 A

ところで、一般に、高温の液体と低温の液体とは温度差が大きいと混ざることなく分離して存在するものであるが、高温の液体と低温の液体とは温度差が小さいと分離しないで混ざりやすくなるものである。これは、給湯機のタンクにおいても同様である。   By the way, in general, a high-temperature liquid and a low-temperature liquid are separated without mixing when the temperature difference is large, but a high-temperature liquid and a low-temperature liquid are easily mixed without separation if the temperature difference is small. It will be. The same applies to the tank of the water heater.

従って、タンクの上側及び下側の断熱性能を同程度とすると、タンクの上側の液体が下側に比べて速く温度低下し、タンクの上側と下側の液体の温度差が小さくなって混ざりやすくなり、タンク内の液体の温度分布が良好でなくなる。すると、給湯機を使用する際にタンクの上側の液体を取り出しても、本来必要な温度の液体を使用することができないといった不都合があり得る。   Therefore, if the heat insulation performance of the upper side and the lower side of the tank is the same level, the temperature of the liquid on the upper side of the tank will drop quickly compared to the lower side, and the temperature difference between the upper and lower liquids of the tank will be small and will be mixed easily. Thus, the temperature distribution of the liquid in the tank is not good. Then, even when the liquid on the upper side of the tank is taken out when using the water heater, there may be a disadvantage that the liquid at the originally required temperature cannot be used.

また、給湯機の一般的な使用状態では、使用によって高温の液体が減少するため、タンク全体に高温の液体が存在していることは少なく、タンクの下側は低温の液体が存在して温度の低い状態であることが多い。従って、タンクの上側及び下側に対して同程度の断熱性能は必ずしも必要ない。さらに、材料が過剰に必要となり、構造が複雑となることからも好ましくない。   Also, in general usage conditions of water heaters, high temperature liquid is reduced by use, so there is little high temperature liquid in the entire tank, and low temperature liquid exists under the tank and the temperature is low. Often in a low state. Therefore, the same degree of thermal insulation performance is not necessarily required for the upper side and the lower side of the tank. Furthermore, it is not preferable because an excessive amount of material is required and the structure becomes complicated.

そこで、本発明は、タンク内の液体の温度分布を好適に維持することができ、且つ、タンクの断熱部に用いられる材料を少なく抑えつつも、タンク全体としての断熱性能を高く維持することのできる給湯機を提供することを目的とする。   Therefore, the present invention is capable of suitably maintaining the temperature distribution of the liquid in the tank, and maintaining high heat insulation performance as a whole tank while suppressing the amount of material used for the heat insulating portion of the tank. An object is to provide a water heater that can be used.

本発明に係る給湯機は、真空断熱部を備える断熱部がタンクの周囲に設けられる給湯機において、前記断熱部は、タンクの高さ方向に沿って複数の領域に区分され、前記断熱部を構成する複数の領域のうち上方の領域における真空断熱部は、それより下方の領域における真空断熱部に比べて厚く設定されることを特徴とする。   A water heater according to the present invention is a water heater in which a heat insulating portion including a vacuum heat insulating portion is provided around a tank, wherein the heat insulating portion is divided into a plurality of regions along a height direction of the tank, and the heat insulating portion is The vacuum heat insulation part in the upper region among the plurality of regions to be configured is characterized in that it is set thicker than the vacuum heat insulation part in the lower region.

上記構成によれば、タンク内の液体の温度分布を良好に維持することができる。また、特に放熱量が大きいタンクの上部の断熱性能を高めることで、部品点数を少なく抑えつつも、タンク全体としての断熱性能を高く維持することができる。   According to the said structure, the temperature distribution of the liquid in a tank can be maintained favorable. In addition, by increasing the heat insulation performance of the upper part of the tank having a particularly large heat dissipation amount, it is possible to maintain high heat insulation performance as a whole tank while keeping the number of parts small.

具体的には、前記断熱部は、タンクの高さ方向上方に位置する上方の断熱部と、前記高さ方向下方に位置する下方の断熱部とに区分され、前記上方の断熱部の真空断熱部は、下方の断熱部の真空断熱部に比べて厚く構成される構成が好ましい。   Specifically, the heat insulating portion is divided into an upper heat insulating portion located above the tank in the height direction and a lower heat insulating portion located below the height direction, and vacuum heat insulation of the upper heat insulating portion. The part is preferably configured to be thicker than the vacuum heat insulating part of the lower heat insulating part.

また、前記上方の断熱部は、厚み方向に重なるように配置される複数の真空断熱材を有し、前記下方の断熱部は、真空断熱材の数が前記上方の断熱部よりも少なく設定されることを特徴とする構成が好ましい。   Further, the upper heat insulating portion has a plurality of vacuum heat insulating materials arranged so as to overlap in the thickness direction, and the lower heat insulating portion is set so that the number of vacuum heat insulating materials is smaller than that of the upper heat insulating portion. The structure characterized by this is preferable.

このようにすれば、下方の断熱部の真空断熱部に比べて厚い上方の断熱部の真空断熱部を容易に実現することができる。   If it does in this way, the vacuum heat insulation part of the upper heat insulation part thicker than the vacuum heat insulation part of a lower heat insulation part can be implement | achieved easily.

また、前記真空断熱材とタンクとの間には、真空断熱材とは異なる断熱特性を有する断熱層が設けられる構成が好ましい。   Moreover, the structure by which the heat insulation layer which has a heat insulation characteristic different from a vacuum heat insulating material is provided between the said vacuum heat insulating material and a tank is preferable.

このようにすれば、真空断熱材がタンクに直接接触しないため、真空断熱材を介してタンクの熱が放熱されるのを好適に防止することができる。   In this way, since the vacuum heat insulating material does not directly contact the tank, it is possible to suitably prevent the heat of the tank from being radiated through the vacuum heat insulating material.

また、前記真空断熱材とタンクとの間に設けられる断熱層は、真空断熱材とは異なる材質で構成される断熱材によって構成されることが好ましい。   Moreover, it is preferable that the heat insulation layer provided between the said vacuum heat insulating material and a tank is comprised with the heat insulating material comprised with a different material from a vacuum heat insulating material.

このようにすれば、真空断熱材がタンクに直接接触しない状態を好適に実現することができる。   In this way, it is possible to suitably realize a state in which the vacuum heat insulating material does not directly contact the tank.

また、前記上方の断熱部を構成する複数の真空断熱材の間には、該真空断熱材とは異なる断熱特性を有する断熱層が設けられる構成が好ましい。   Moreover, the structure by which the heat insulation layer which has a heat insulation characteristic different from this vacuum heat insulating material is provided between the several vacuum heat insulating material which comprises the said upper heat insulation part is preferable.

このようにすれば、複数の真空断熱材同士が直接接触しないため、内側の真空断熱材が仮にタンクからの熱で加熱されたとしても、その熱が外側の真空断熱材を介して放熱されるのを好適に防止することができる。   In this way, since the plurality of vacuum heat insulating materials are not in direct contact with each other, even if the inner vacuum heat insulating material is heated by the heat from the tank, the heat is radiated through the outer vacuum heat insulating material. Can be suitably prevented.

また、前記複数の真空断熱材の間に設けられる断熱層は、真空断熱材とは異なる材質で構成される断熱材によって構成されることが好ましい。   Moreover, it is preferable that the heat insulation layer provided between the plurality of vacuum heat insulating materials is formed of a heat insulating material made of a material different from the vacuum heat insulating material.

このようにすれば、真空断熱材同士が直接接触しない状態を好適に実現することができる。   If it does in this way, the state where vacuum heat insulating materials do not contact directly can be realized suitably.

また、前記タンクの下部の側壁が側方へ膨出するのを防止する補強部材を備え、該補強部材は、前記下方の断熱部に対応させて配置される構成が好ましい。   Further, it is preferable that a reinforcing member for preventing the lower side wall of the tank from bulging sideways is provided, and the reinforcing member is disposed in correspondence with the lower heat insulating portion.

このようにすれば、下方の断熱部の厚みを小さくしたことで生じる空間を、補強部材を配置する空間として有効に利用することができる。従って、タンクに真空断熱部及び補強部材を装備した装置の全体の寸法が必要以上に大きくなるのを好適に防止しつつも、断熱効果の向上及びタンクの補強を同時に実現することができる。   If it does in this way, the space which arises by reducing the thickness of the lower heat insulation part can be used effectively as a space which arranges a reinforcing member. Therefore, it is possible to simultaneously improve the heat insulating effect and reinforce the tank while suitably preventing the overall size of the apparatus equipped with the vacuum heat insulating portion and the reinforcing member in the tank from becoming larger than necessary.

本発明によれば、タンク内の液体の温度分布を好適に維持することができ、且つ、タンクの断熱部に用いられる材料を少なく抑えつつも、タンク全体としての断熱性能を高く維持することができる。   According to the present invention, the temperature distribution of the liquid in the tank can be suitably maintained, and the heat insulating performance of the entire tank can be maintained high while suppressing the amount of material used for the heat insulating portion of the tank. it can.

第1実施例に係るタンクの周りに真空断熱材を配置した概略斜視図。The schematic perspective view which has arrange | positioned the vacuum heat insulating material around the tank which concerns on 1st Example. 筐体を取り外した給湯機を前面から見た正面図。The front view which looked at the water heater which removed the housing | casing from the front. タンクに設けられる断熱部を説明する概略図。Schematic explaining the heat insulation part provided in a tank. タンクの高さ方向上部の背面側を上面より見た概略断面図。The schematic sectional drawing which looked at the back side of the height direction upper part of a tank from the upper surface. タンクの高さ方向下部の背面側を上面より見た概略断面図。The schematic sectional drawing which looked at the back side of the height direction lower part of a tank from the upper surface. 真空断熱材の外観図。The external view of a vacuum heat insulating material. 図6のA−A断面図。AA sectional drawing of FIG. 真空断熱材の溶着部6を折り曲げた図。The figure which bent the welding part 6 of the vacuum heat insulating material. 第2実施例に係るタンクの周りに真空断熱材を配置した状態を示す概略断面図。The schematic sectional drawing which shows the state which has arrange | positioned the vacuum heat insulating material around the tank which concerns on 2nd Example.

以下、本発明の実施形態について添付図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図1は、タンク1の周りに、長形状の真空断熱材2a,2b,2c,2d,3a,3bを配置した状態を示す外観図である。図2は、筐体を取り外した給湯機を前面から見た正面図である。図3は、タンクに設けられる断熱部を説明する概略図である。図4は、図1の上部を背面側の上面から見た概略断面図である。図5は、図1の下部を背面側の上面より見た断面略図である。図6は、真空断熱材2aの外観図であり、その周囲の溶着部6が示される。図7は、図4のA−A断面図を示す。図8は、真空断熱材2aの溶着部(又は、密閉代)6を折り曲げ(図6の左側部分)、溶着部6からの放熱しないようにしたものであり、この状態で貯湯タンク1に貼り付けられる。他の真空断熱材2b,2c,2d,3a,3bも同様である。図9は、上面視円筒状のタンクに断熱部を設けた状態を示す。   FIG. 1 is an external view showing a state in which long vacuum heat insulating materials 2 a, 2 b, 2 c, 2 d, 3 a, 3 b are arranged around a tank 1. FIG. 2 is a front view of the water heater from which the casing is removed as seen from the front. FIG. 3 is a schematic view illustrating a heat insulating portion provided in the tank. FIG. 4 is a schematic cross-sectional view of the upper part of FIG. 1 as viewed from the upper surface on the back side. FIG. 5 is a schematic cross-sectional view of the lower part of FIG. 1 as viewed from the upper surface on the back side. FIG. 6 is an external view of the vacuum heat insulating material 2a and shows the welded portion 6 around it. FIG. 7 is a cross-sectional view taken along the line AA in FIG. FIG. 8 shows a state in which the welded portion (or sealing allowance) 6 of the vacuum heat insulating material 2a is bent (the left portion in FIG. 6) so as not to dissipate heat from the welded portion 6. In this state, it is attached to the hot water storage tank 1. Attached. The same applies to the other vacuum heat insulating materials 2b, 2c, 2d, 3a and 3b. FIG. 9 shows a state in which a heat insulating portion is provided in a cylindrical tank in a top view.

本実施形態に係る給湯機は、図1に示すように、真空断熱部2,3を備える断熱部Vがタンク1の周囲に設けられる給湯機において、前記断熱部Vは、タンクの高さ方向に沿って複数の領域に区分され、前記断熱部Vを構成する複数の領域のうち上方の領域における真空断熱部2は、それより下方の領域における真空断熱部3に比べて厚く設定される。   As shown in FIG. 1, the water heater according to this embodiment is a water heater in which a heat insulating portion V including vacuum heat insulating portions 2 and 3 is provided around the tank 1, and the heat insulating portion V is in the height direction of the tank. The vacuum heat insulating portion 2 in the upper region among the plurality of regions constituting the heat insulating portion V is set thicker than the vacuum heat insulating portion 3 in the lower region.

上記構成によれば、タンク1内の液体の温度分布を良好に維持することができる。また、特に放熱量が大きいタンク1の上部の断熱性能を高めることで、部品点数を少なく抑えつつも、タンク全体としての断熱性能を高く維持することができる。   According to the said structure, the temperature distribution of the liquid in the tank 1 can be maintained favorable. In addition, by increasing the heat insulation performance of the upper portion of the tank 1 that has a particularly large amount of heat radiation, the heat insulation performance of the tank as a whole can be maintained high while keeping the number of parts low.

具体的には、前記断熱部Vは、タンク1の高さ方向上方に位置する上方の断熱部V1と、前記高さ方向下方に位置する下方の断熱部V2とに区分され、前記上方の断熱部V1の真空断熱部2は、下方の断熱部V2の真空断熱部3に比べて厚く構成される。   Specifically, the heat insulating portion V is divided into an upper heat insulating portion V1 located above the tank 1 in the height direction and a lower heat insulating portion V2 located below the height direction, and the upper heat insulating portion V2. The vacuum heat insulating part 2 of the part V1 is configured to be thicker than the vacuum heat insulating part 3 of the lower heat insulating part V2.

また、前記上方の断熱部V1は、厚み方向に重なるように配置される複数の真空断熱材2a,2b及び2c,2dを有し、前記下方の断熱部V2は、真空断熱材3a又は3bの数が前記上方の断熱部V1よりも少なく設定される。   The upper heat insulating part V1 has a plurality of vacuum heat insulating materials 2a, 2b and 2c, 2d arranged so as to overlap in the thickness direction, and the lower heat insulating part V2 is formed of the vacuum heat insulating material 3a or 3b. The number is set to be smaller than that of the upper heat insulating portion V1.

このようにすれば、下方の断熱部V2の真空断熱部3に比べて厚い上方の断熱部V1の真空断熱部2を容易に実現することができる。具体的には、前記下方の断熱部V2は、単一の真空断熱材3a又は3bを有する。ただし、これに限定されるものではなく、上方の断熱部V1を構成する真空断熱材として下方の断熱部V2を構成する真空断熱材よりも厚いものを採用するものであってもよい。   If it does in this way, compared with the vacuum heat insulation part 3 of the lower heat insulation part V2, the vacuum heat insulation part 2 of the upper heat insulation part V1 thicker can be implement | achieved easily. Specifically, the lower heat insulating portion V2 includes a single vacuum heat insulating material 3a or 3b. However, it is not limited to this, A thing thicker than the vacuum heat insulating material which comprises the lower heat insulation part V2 as a vacuum heat insulating material which comprises the upper heat insulation part V1 may be employ | adopted.

また、前記真空断熱材2a,2c,3a,3bとタンク1との間には、真空断熱材とは異なる断熱特性を有する断熱層が設けられる。このようにすれば、真空断熱材2a,2c,3a,3bがタンク1に直接接触しないため、真空断熱材2a,2c,3a,3bを介してタンク1の熱が放熱されるのを好適に防止することができる。   Moreover, between the said vacuum heat insulating materials 2a, 2c, 3a, 3b and the tank 1, the heat insulation layer which has a heat insulation characteristic different from a vacuum heat insulating material is provided. In this way, since the vacuum heat insulating materials 2a, 2c, 3a, 3b are not in direct contact with the tank 1, it is preferable that the heat of the tank 1 is radiated through the vacuum heat insulating materials 2a, 2c, 3a, 3b. Can be prevented.

また、前記真空断熱材2a,2c,3a,3bとタンク1との間に設けられる断熱層は、真空断熱材とは異なる材質で構成される断熱材4によって構成される。このようにすれば、真空断熱材2a,2c,3a,3bがタンク1に直接接触しない状態を好適に実現することができる。   Moreover, the heat insulation layer provided between the said vacuum heat insulating materials 2a, 2c, 3a, 3b and the tank 1 is comprised with the heat insulating material 4 comprised with the material different from a vacuum heat insulating material. In this way, it is possible to suitably realize a state in which the vacuum heat insulating materials 2a, 2c, 3a, 3b are not in direct contact with the tank 1.

具体的には、断熱材4としては、ポリエチレンフォーム(PE)等が考えられるが、ビーズ法ポリスチレンフォーム(EPS)等のポリスチレンフォームであってもよく、これらのような発泡材以外にも、グラスウールであってもよい。さらには、断熱層は、断熱材4によって構成されるものではなく、空気層によって形成されるものであってもよい。   Specifically, as the heat insulating material 4, polyethylene foam (PE) or the like is conceivable, but polystyrene foam such as beaded polystyrene foam (EPS) may be used. It may be. Furthermore, the heat insulating layer is not constituted by the heat insulating material 4 but may be formed by an air layer.

また、前記上方の断熱部V1を構成する複数の真空断熱材2aと2b又は2cと2dとの間には、該真空断熱材とは異なる断熱特性を有する断熱層が設けられる。このようにすれば、複数の真空断熱材2aと2b又は2cと2d同士が直接接触しないため、内側(タンクに近い側)の真空断熱材2a,2cが仮にタンク1からの熱で加熱されたとしても、その熱が外側(タンクから遠い側)の真空断熱材2b,2dを介して放熱されるのを好適に防止することができる。   Further, a heat insulating layer having a heat insulating property different from that of the vacuum heat insulating material is provided between the plurality of vacuum heat insulating materials 2a and 2b or 2c and 2d constituting the upper heat insulating portion V1. In this way, since the plurality of vacuum heat insulating materials 2a and 2b or 2c and 2d are not in direct contact with each other, the vacuum heat insulating materials 2a and 2c on the inner side (side closer to the tank) are temporarily heated by the heat from the tank 1. However, it is possible to suitably prevent the heat from being radiated through the vacuum heat insulating materials 2b and 2d on the outer side (the side far from the tank).

また、前記複数の真空断熱材2aと2b又は2cと2dの間に設けられる断熱層は、真空断熱材とは異なる材質で構成される断熱材5によって構成される。このようにすれば、真空断熱材2aと2b又は2cと2d同士が直接接触しない状態を好適に実現することができる。   The heat insulating layer provided between the plurality of vacuum heat insulating materials 2a and 2b or 2c and 2d is formed of a heat insulating material 5 made of a material different from the vacuum heat insulating material. If it does in this way, the state where vacuum heat insulating materials 2a and 2b or 2c and 2d do not contact directly can be realized suitably.

具体的には、断熱材5としては、ポリエチレンフォーム(PE)等が考えられるが、ビーズ法ポリスチレンフォーム(EPS)等のポリスチレンフォームであってもよく、これらのような発泡材以外にも、グラスウールであってもよい。さらには、断熱層は、断熱材5によって構成されるものではなく、空気層によって形成されるものであってもよい。   Specifically, polyethylene foam (PE) or the like can be considered as the heat insulating material 5, but polystyrene foam such as beaded polystyrene foam (EPS) may be used. It may be. Furthermore, the heat insulating layer is not constituted by the heat insulating material 5 but may be formed by an air layer.

ところで、使用時にはタンクの内部は液体で満たされるため、タンク(特に下部)は水の圧力によって外側へ膨らむ力が作用する。従って、この給湯機は、前記タンク1の下部の側壁が側方へ膨出するのを防止する補強部材7を備え、該補強部材7は、前記下方の断熱部に対応させて配置される。   By the way, since the inside of a tank is filled with the liquid at the time of use, the force which bulges outside by the pressure of water acts on a tank (especially lower part). Accordingly, the water heater includes a reinforcing member 7 that prevents the lower side wall of the tank 1 from bulging sideways, and the reinforcing member 7 is disposed corresponding to the lower heat insulating portion.

このようにすれば、下方の断熱部V2の厚みを小さくしたことで生じる空間を、補強部材7を配置する空間として有効に利用することができる。従って、タンク1に真空断熱部2,3及び補強部材7を装備した装置の全体の寸法が必要以上に大きくなるのを好適に防止しつつも、断熱効果の向上及びタンク1の補強を同時に実現することができる。   If it does in this way, the space which arises by reducing the thickness of the heat insulation part V2 of the downward | lower direction can be utilized effectively as a space which arrange | positions the reinforcement member 7. FIG. Therefore, while improving the heat insulation effect and reinforcing the tank 1 at the same time, preferably preventing the overall size of the apparatus equipped with the vacuum heat insulating parts 2 and 3 and the reinforcing member 7 in the tank 1 from being increased more than necessary. can do.

なお、補強部材7は、具体的には、タンクの外周を囲むように配置されるものであり、タンクの側面側及び背面側に配置される棒状部材と前面側に配置される板状部材とで構成される。これら棒状部材及び板状部材は、ボルト等の固定部材によって一体的に連結される。   Specifically, the reinforcing member 7 is disposed so as to surround the outer periphery of the tank, and includes a rod-shaped member disposed on the side surface side and the back surface side of the tank, and a plate-shaped member disposed on the front surface side. Consists of. These rod-like members and plate-like members are integrally connected by a fixing member such as a bolt.

また、図2に示すように、タンク1は、真空断熱部2,3及び補強部材7が備えられた状態で筐体Cに収容されるものであるが、このように空間を有効利用することで、筐体Cを大きくせずに済む。即ち、上記構成は、大きさの制約のある筐体Cに収める上で好適である。   Moreover, as shown in FIG. 2, the tank 1 is accommodated in the housing | casing C in the state provided with the vacuum heat insulation parts 2 and 3, and the reinforcement member 7, However, Effectively utilizing space in this way. Thus, it is not necessary to enlarge the casing C. That is, the above configuration is suitable for housing in a casing C with size restrictions.

また、図3に示すように、この給湯機は、タンク1の前面,背面,側面といった鉛直方向に沿う面だけでなく、頂部においても断熱されるものである。具体的には、前記断熱部Vは、タンク1の頂部に位置する頂部断熱部V3をさらに備えて構成されるものである。   Further, as shown in FIG. 3, this water heater is insulated not only on the surface along the vertical direction such as the front surface, the back surface, and the side surface of the tank 1 but also on the top portion. Specifically, the heat insulating portion V is configured to further include a top heat insulating portion V3 located at the top of the tank 1.

また、図3に示すように、この給湯機は、タンク1の上にシスターンタンク8と呼ばれる第二のタンクを有する。次に、タンク1の頂部の断熱構造について説明する。   As shown in FIG. 3, the water heater has a second tank called a cistern tank 8 on the tank 1. Next, the heat insulating structure at the top of the tank 1 will be described.

前記頂部断熱部V3は、単一の真空断熱材9bを備えて構成される。また、前記真空断熱材9bとタンク1の頂部との間には、真空断熱材とは異なる断熱特性を有する断熱層が設けられる。具体的には、この真空断熱材9bとは異なる断熱特性を有する断熱層は、真空断熱材とは異なる材質で構成される断熱材9d,9c,9bによって構成される。   The top heat insulating part V3 includes a single vacuum heat insulating material 9b. A heat insulating layer having a heat insulating property different from that of the vacuum heat insulating material is provided between the vacuum heat insulating material 9b and the top of the tank 1. Specifically, the heat insulating layer having a heat insulating property different from that of the vacuum heat insulating material 9b is formed of heat insulating materials 9d, 9c, and 9b made of a material different from the vacuum heat insulating material.

具体的には、頂部の上にポリエチレンフォーム9dが配置され、その上にグラスウール9cが配置され、その上に真空断熱材9bが配置され、その上にポリスチレンフォーム9aが配置される。   Specifically, polyethylene foam 9d is disposed on the top, glass wool 9c is disposed thereon, vacuum heat insulating material 9b is disposed thereon, and polystyrene foam 9a is disposed thereon.

グラスウール9cは、真空断熱材9bとタンク1の頂部との間の隙間を埋めるために用いられる。具体的には、タンク1の頂部は、溶接の関係上、端縁部が高く且つその内側が下方に凹んだ形状を有するものであり、端縁部より内側の面の部分は端縁部に比べて約15〜20mm程度低くなっている。従って、9dでは空間ができてしまう。この点、グラスウール9cは形状を変更しやすいため、凹んだ部分を埋めるのに好適である。   The glass wool 9 c is used to fill a gap between the vacuum heat insulating material 9 b and the top of the tank 1. Specifically, the top portion of the tank 1 has a shape in which the edge portion is high and the inside thereof is recessed downward due to welding, and the portion of the surface inside the edge portion is the edge portion. Compared to about 15-20 mm lower. Therefore, 9d creates a space. In this respect, the glass wool 9c is easy to change the shape, and is suitable for filling the recessed portion.

なお、グラスウール9c及びポリエチレンフォーム9dは、どちらか一方のみ設けられるものであってもよい。また、グラスウール9c及びポリエチレンフォーム9dの順番は逆であっても良い。さらに、グラスウール9c及びポリエチレンフォーム9dの代わりに、又は、グラスウール9c及びポリエチレンフォーム9dのいずれかの代わりにポリスチレンフォームが配置されるものであってもよい。   Note that only one of the glass wool 9c and the polyethylene foam 9d may be provided. Further, the order of the glass wool 9c and the polyethylene foam 9d may be reversed. Further, a polystyrene foam may be disposed instead of the glass wool 9c and the polyethylene foam 9d, or instead of either the glass wool 9c and the polyethylene foam 9d.

次に、本実施形態に係る給湯機の実施例1について説明する。   Next, Example 1 of the water heater according to the present embodiment will be described.

実施例1に係る給湯機は、図1等に示すように、タンク1が上面視略角形状を有するものである。具体的には、タンク1は、上面視略角形状を有するが角部を湾曲させたものである。   In the water heater according to the first embodiment, as shown in FIG. 1 and the like, the tank 1 has a substantially square shape in a top view. Specifically, the tank 1 has a substantially square shape when viewed from above, but has a curved corner.

まず、上方の断熱部V1について、図2〜図4を用いて説明する。上方の断熱部V1においては、タンク1の表面に断熱材4としてのポリエチレンフォームを貼り、その上に真空断熱材2a,2cを貼り、その上に断熱材5としてのポリエチレンフォームを貼り、最上面に真空断熱材2b,2dを貼る。   First, the upper heat insulation part V1 is demonstrated using FIGS. In the upper heat insulating part V1, a polyethylene foam as the heat insulating material 4 is pasted on the surface of the tank 1, a vacuum heat insulating material 2a, 2c is pasted thereon, a polyethylene foam as the heat insulating material 5 is pasted thereon, and the top surface The vacuum heat insulating materials 2b and 2d are pasted on.

また、真空断熱材2a,2c,2b,2dは、その長さの関係上タンク1の外周に配置すると、真空断熱材2a,2c及び2b,2dが重複する部分が生じる。この部分は、タンク1の背面側に位置し、図4に示すように配置される。具体的に説明すると、タンク1の内側から外側に向かう方向に沿って、順に、断熱材4,真空断熱材2c,真空断熱材2a,断熱材5,真空断熱材2d,真空断熱材2bが配置される。   Further, when the vacuum heat insulating materials 2a, 2c, 2b, 2d are arranged on the outer periphery of the tank 1 due to their lengths, portions where the vacuum heat insulating materials 2a, 2c and 2b, 2d overlap are generated. This portion is located on the back side of the tank 1 and is arranged as shown in FIG. More specifically, the heat insulating material 4, the vacuum heat insulating material 2c, the vacuum heat insulating material 2a, the heat insulating material 5, the vacuum heat insulating material 2d, and the vacuum heat insulating material 2b are arranged in order along the direction from the inner side to the outer side of the tank 1. Is done.

真空断熱材2a,2c,2b,2dは、グラスウール等のコア材をアルミニウムやステンレス等の金属製部材によって真空状態で包むことにより形成されるものである。従って、真空断熱材2a,2c,2b,2dは、一方の面で受けた熱が周縁端部を経由して他方の面に伝熱するという不都合がある。   The vacuum heat insulating materials 2a, 2c, 2b, and 2d are formed by wrapping a core material such as glass wool in a vacuum state with a metal member such as aluminum or stainless steel. Therefore, the vacuum heat insulating materials 2a, 2c, 2b, and 2d have a disadvantage that heat received on one surface is transferred to the other surface via the peripheral edge.

この点、上記構成によれば、真空断熱材2cの端部は、それよりも外側に配置される真空断熱材2aに覆われる構造となっており、その他の真空断熱材2a,2dもそれよりも外側に配置される断熱材5や真空断熱材2d,2bに覆われる構造となっている。従って、真空断熱材2a,2c,2bの一方の面で受けた熱が他方の面に伝熱しても、その熱が外部に放熱されるのを好適に防止することができ、より一層断熱性能を向上させることができる。   In this respect, according to the above configuration, the end of the vacuum heat insulating material 2c is covered with the vacuum heat insulating material 2a disposed on the outer side, and the other vacuum heat insulating materials 2a and 2d are also formed thereon. Is also covered with the heat insulating material 5 and the vacuum heat insulating materials 2d and 2b arranged outside. Therefore, even if the heat received on one surface of the vacuum heat insulating materials 2a, 2c, 2b is transferred to the other surface, the heat can be suitably prevented from radiating to the outside, and the heat insulating performance can be further improved. Can be improved.

一方の面から他方の面へ回り込むようにして伝熱した熱の放熱を良好に防止するためには、外側の断熱材(通常の断熱材や真空断熱材)との重複長さは、各真空断熱材2a,2c,2b,2dの伝熱距離以上の寸法とすることが好ましい。伝熱距離の具体的な値は、真空断熱材の厚みが約5mmの場合には、伝熱距離は約200mm程度であり、厚みAが約10mmの場合には、伝熱距離は約100mm程度である。   In order to prevent the heat transferred from one side to the other side, the length of overlap with the outer heat insulating material (normal heat insulating material or vacuum heat insulating material) It is preferable to make it the dimension more than the heat transfer distance of the heat insulating materials 2a, 2c, 2b, 2d. The specific value of the heat transfer distance is about 200 mm when the thickness of the vacuum heat insulating material is about 5 mm, and about 100 mm when the thickness A is about 10 mm. It is.

一方、下方の断熱部V2は、図3に示すように、タンク1の表面に断熱材4を貼り、その上に真空断熱材3a及び真空断熱材3bを一重で貼る。真空断熱材3a及び真空断熱材3bは、背面側で端部同士を突合わせる。なお、下方の断熱部V2の厚みが上方の断熱部V1よりも薄いことで、変形しやすいタンク1の下部を補強部材7によって確実に支持させることができる。   On the other hand, as shown in FIG. 3, the lower heat insulating portion V2 has a heat insulating material 4 attached to the surface of the tank 1, and a vacuum heat insulating material 3a and a vacuum heat insulating material 3b attached to the heat insulating material 4 in a single layer. The vacuum heat insulating material 3a and the vacuum heat insulating material 3b face each other at the back side. In addition, the lower part of the tank 1 which is easy to deform | transform can be reliably supported by the reinforcement member 7 because the thickness of the lower heat insulation part V2 is thinner than the upper heat insulation part V1.

上記構成によれば、直接タンク1に接触させないように、タンク1と真空断熱材2a,2c,3a,3bの間に、断熱材4を貼り付けることにより、タンク1からの放熱を小さくする効果がある。また、高さ方向上方に複数枚の真空断熱材2a,2b及び2c,2dを貼ることにより、放熱を抑えるようにでき、さらに、真空断熱材2a又は2cと真空断熱材2b又は2dの間に断熱材5を貼り付け、外側の真空断熱材2b又は2dが内側の真空断熱材2a又は2cからの熱をもらい放熱するのを抑制する効果がある。   According to the above configuration, the heat radiation from the tank 1 can be reduced by sticking the heat insulating material 4 between the tank 1 and the vacuum heat insulating materials 2a, 2c, 3a, 3b so as not to contact the tank 1 directly. There is. In addition, heat radiation can be suppressed by attaching a plurality of vacuum heat insulating materials 2a, 2b and 2c, 2d above the height direction, and further, between the vacuum heat insulating material 2a or 2c and the vacuum heat insulating material 2b or 2d. The heat insulating material 5 is affixed and the outer vacuum heat insulating material 2b or 2d has an effect of receiving heat from the inner vacuum heat insulating material 2a or 2c and suppressing heat dissipation.

次に、各部材の具体的な寸法について説明する。   Next, specific dimensions of each member will be described.

この給湯機は、タンクの大きさの異なる2つの種類があり、大きい方のタンクの容量は460Lであり、小さい方のタンクの容量は370Lである。なお、図2に示すものは、タンクの容量が460Lのものである。   There are two types of water heaters with different tank sizes. The capacity of the larger tank is 460L, and the capacity of the smaller tank is 370L. 2 shows a tank having a capacity of 460L.

筐体Cは、直方体の形状を有している。筐体Cの寸法は、タンク容量が370Lのタイプでは、高さが約1530mm、奥行きが約1320mm、幅が約415mmであり、タンク容量が460Lのタイプでは、高さが約1790mm、奥行きが約1320mm、幅が約415mmである。ただし、筐体の寸法は、上記寸法に限定されないことは言うまでもない。   The casing C has a rectangular parallelepiped shape. The dimensions of the case C are about 1530 mm in height, about 1320 mm in depth and about 415 mm in width for the type with a tank capacity of 370 L, and about 1790 mm in height for the type with a tank capacity of 460 L, and about depth. It is 1320 mm and the width is about 415 mm. However, it goes without saying that the dimensions of the housing are not limited to the above dimensions.

タンク1は、直方体の形状を有しており、内部に夜間電力等を利用してヒートポンプ,ヒータ等で加熱した高温水が貯留されている。タンクの寸法は、内容積が370Lのタイプでは、高さが約1175mm、奥行きが約1175mm、幅が約315mmであり、内容積が460Lのタイプでは、高さが約1335mm、奥行きが約1075mm、幅が約315mmである。ただし、貯湯タンクの寸法は、上記寸法に限定されないことは言うまでもない。   The tank 1 has a rectangular parallelepiped shape, and stores therein high-temperature water heated by a heat pump, a heater, or the like using nighttime electric power or the like. The dimensions of the tank are about 1175 mm in height, about 1175 mm in depth and about 315 mm in width for a type with an internal volume of 370 L, and about 1335 mm in height and about 1075 mm in depth for a type with an internal volume of 460 L, The width is about 315 mm. However, it goes without saying that the dimensions of the hot water storage tank are not limited to the above dimensions.

また、貯湯タンク1の上部に配置される真空断熱材2a,2b,2c,2dとしては、内容積が370Lのタイプの貯湯タンクでは、縦寸法が約400mm、横寸法が約1300mm、厚み寸法が約12mmの寸法のものが用いられ、内容積が460Lのタイプの貯湯タンクでは、縦寸法が約600mm、横寸法が約1300mm、厚み寸法が約10mmの寸法のものが用いられる。   In addition, as the vacuum heat insulating materials 2a, 2b, 2c, and 2d disposed on the upper part of the hot water storage tank 1, in the hot water storage tank having an internal volume of 370L, the vertical dimension is about 400 mm, the horizontal dimension is about 1300 mm, and the thickness dimension is A hot water storage tank having a size of about 12 mm and an internal volume of 460 L has a vertical size of about 600 mm, a horizontal size of about 1300 mm, and a thickness of about 10 mm.

また、貯湯タンク1の下部に配置される真空断熱材3a,3bは、両タイプの貯湯タンクに共通であり、縦寸法が約600mm、横寸法が約1215mm、厚み寸法が約10mmの寸法のものが用いられる。さらに、真空断熱材は、その周囲に幅寸法が50mm前後の密閉部6を有している。ただし、真空断熱材の各部の寸法は、上記寸法に限定されないことは言うまでもない。   The vacuum heat insulating materials 3a and 3b arranged at the lower part of the hot water storage tank 1 are common to both types of hot water storage tanks, and have a vertical dimension of about 600 mm, a horizontal dimension of about 1215 mm, and a thickness dimension of about 10 mm. Is used. Furthermore, the vacuum heat insulating material has the sealing part 6 whose width dimension is around 50 mm around it. However, it goes without saying that the dimensions of each part of the vacuum heat insulating material are not limited to the above dimensions.

断熱材4,5は、厚み寸法が約2mmで、縦寸法及び横寸法が真空断熱材2a及び2bよりも大きなものが用いられる。具体的には、断熱材4は、タンクの高さ方向全体に亘る縦寸法を有する。一方、断熱材5は、上方の断熱部V1を構成する内側の真空断熱材2aと外側の真空断熱材2bとを隔てるものであるため、これら真空断熱材2a,2bよりも長く、断熱材5よりも短く設定される。   As the heat insulating materials 4 and 5, those having a thickness dimension of about 2 mm and having a vertical dimension and a horizontal dimension larger than those of the vacuum heat insulating materials 2a and 2b are used. Specifically, the heat insulating material 4 has a vertical dimension over the entire height direction of the tank. On the other hand, since the heat insulating material 5 separates the inner vacuum heat insulating material 2a and the outer vacuum heat insulating material 2b constituting the upper heat insulating portion V1, the heat insulating material 5 is longer than the vacuum heat insulating materials 2a and 2b. Is set shorter.

より具体的には、断熱材4,5は、内容積が370Lのタイプでは、縦寸法が約1175mm、横寸法が約2600mm、厚みが約2mmであり、内容積が460Lのタイプでは、縦寸法が約1335mm、横寸法が約2600mm、厚み約2mmである。ただし、断熱材4,5は、真空断熱材のように熱の回り込みという問題がないことから、その大きさは特定のものに限定されない。   More specifically, the heat insulating materials 4 and 5 have a vertical dimension of about 1175 mm, a horizontal dimension of about 2600 mm and a thickness of about 2 mm in a type with an internal volume of 370 L, and a vertical dimension in a type with an internal volume of 460 L. Is about 1335 mm, the lateral dimension is about 2600 mm, and the thickness is about 2 mm. However, the size of the heat insulating materials 4 and 5 is not limited to a specific one because there is no problem of heat wraparound unlike a vacuum heat insulating material.

なお、真空断熱材がなるべくタンクの高さ方向上部に配置されるように断熱部Vを設けると、真空断熱材の大きさの関係上、タンクの高さ方向下部には真空断熱材が配置されない領域が生じる。この領域は、タンクの大きさにもよるが、約75〜115mm程度である。従って、この部分を断熱するために、断熱材10が配置される。具体的には、この断熱材10としては、ポリエチレンフォーム(PE)等が考えられるが、ビーズ法ポリスチレンフォーム(EPS)等のポリスチレンフォームであってもよく、これらのような発泡材以外にも、グラスウールであってもよい。   If the heat insulating portion V is provided so that the vacuum heat insulating material is disposed as high as possible in the tank height direction, the vacuum heat insulating material is not disposed in the tank height direction lower portion due to the size of the vacuum heat insulating material. A region arises. This region is about 75 to 115 mm although it depends on the size of the tank. Therefore, in order to insulate this part, the heat insulating material 10 is arrange | positioned. Specifically, as this heat insulating material 10, polyethylene foam (PE) or the like can be considered, but polystyrene foam such as bead method polystyrene foam (EPS) may be used. Glass wool may be used.

次に、本実施形態に係る給湯機の実施例2について説明する。   Next, Example 2 of the water heater according to this embodiment will be described.

実施例2に係る給湯機は、図9に示すように、耐圧を向上させるために、タンク1′の外面全体を湾曲させた上面視円形状のものである。この場合にも、前記断熱部V′は、タンクの高さ方向に沿って複数の領域に区分され、前記断熱部V′を構成する複数の領域のうち上方の領域における真空断熱部2′は、それより下方の領域における真空断熱部(図示しない)に比べて厚く設定される。   As shown in FIG. 9, the water heater according to the second embodiment has a circular shape in a top view in which the entire outer surface of the tank 1 ′ is curved in order to improve the pressure resistance. Also in this case, the heat insulating portion V ′ is divided into a plurality of regions along the height direction of the tank, and the vacuum heat insulating portion 2 ′ in the upper region among the plurality of regions constituting the heat insulating portion V ′ is The thickness is set to be thicker than that of the vacuum heat insulating portion (not shown) in the lower region.

なお、断熱部V′は、タンク1′の外周のうち所定の角度範囲に亘って設けられる一方、全周には亘っていない。この断熱部V′が設けられない部分は、タンクに備えられる各種の部品を取り付けるためのスペースとなっている。   The heat insulating portion V ′ is provided over a predetermined angle range in the outer periphery of the tank 1 ′, but does not extend over the entire periphery. The portion where the heat insulating portion V ′ is not provided is a space for attaching various components provided in the tank.

また、前記断熱部V′は、タンク1′の高さ方向上方に位置する上方の断熱部V1′と、前記高さ方向下方に位置する下方の断熱部(図示しない)とに区分されるなど、その他の基本的な構成は実施例1と同様であるので、詳細な説明を割愛する。   The heat insulating part V ′ is divided into an upper heat insulating part V1 ′ located above the tank 1 ′ in the height direction and a lower heat insulating part (not shown) located below the height direction. Since the other basic configuration is the same as that of the first embodiment, a detailed description thereof is omitted.

なお、本発明に係る給湯機は、上記各実施形態の構成に限定されるものではなく、発明の趣旨を逸脱しない範囲内で種々の変更が可能である。   In addition, the water heater which concerns on this invention is not limited to the structure of said each embodiment, A various change is possible within the range which does not deviate from the meaning of invention.

例えば、上記実施形態においては、断熱部Vは、上方の断熱部V1及び下方の断熱部V2の二つの領域に区分されるものであったが、これに限定されるものではなく、3つ以上の領域に区分されるものであってもよい。この場合には、上方の断熱部と下方の断熱部との間の断熱部の真空断熱部が、上方の断熱部の真空断熱部よりは薄く、且つ、下方の断熱部の真空断熱部よりは厚く設定されることが好ましい。   For example, in the said embodiment, although the heat insulation part V was divided into two area | regions, the upper heat insulation part V1 and the lower heat insulation part V2, it is not limited to this, Three or more It may be divided into areas. In this case, the vacuum heat insulating part of the heat insulating part between the upper heat insulating part and the lower heat insulating part is thinner than the vacuum heat insulating part of the upper heat insulating part, and more than the vacuum heat insulating part of the lower heat insulating part. It is preferable to set it thick.

また、上記実施形態においては、真空断熱材2a,2c,3a,3bとタンク1との間には、真空断熱材とは異なる断熱特性を有する断熱層が設けられるものとして説明したが、これに限定されるものではなく、断熱層が存在せず、真空断熱材がタンクに直接接触させて配置されるものであってもよい。   Moreover, in the said embodiment, although demonstrated as what provided the heat insulation layer which has the heat insulation characteristic different from a vacuum heat insulating material between the vacuum heat insulating materials 2a, 2c, 3a, 3b, and the tank 1, It is not limited, A heat insulation layer does not exist and a vacuum heat insulating material may be arrange | positioned in direct contact with a tank.

同様に、上方の断熱部V1を構成する複数の真空断熱材2aと2b又は2cと2dとの間には、該真空断熱材とは異なる断熱特性を有する断熱層が設けられるものとして説明したが、これに限定されるものではなく、断熱層が存在せず、各真空断熱材同士が直接接触させて配置されるものであってもよい。   Similarly, although it demonstrated that the heat insulation layer which has a heat insulation characteristic different from this vacuum heat insulating material is provided between the several vacuum heat insulating materials 2a and 2b or 2c and 2d which comprise the upper heat insulation part V1. However, the present invention is not limited to this, and the heat insulating layer may not exist, and the vacuum heat insulating materials may be arranged in direct contact with each other.

また、上記実施形態においては、上方の断熱部V1は、2つの真空断熱材2a,2b及び2c,2dを厚み方向に重なるように配置して構成されるものであったが、これに限定されるものではなく、3つの真空断熱材を厚み方向に重なるように配置して構成されるものであってもよい。   Moreover, in the said embodiment, although the upper heat insulation part V1 was arrange | positioned so that two vacuum heat insulating materials 2a, 2b and 2c, 2d might overlap in the thickness direction, it is limited to this. Instead, the three vacuum heat insulating materials may be arranged so as to overlap in the thickness direction.

1 タンク
2,3 真空断熱部
2a,2b,2c,2d,3a,3b,9b 真空断熱材
4,5 断熱材
6 溶着部
7 補強部材
8 シスターンタンク
V 断熱部
V1 上方の断熱部
V2 下方の断熱部
V3 頂部断熱部
DESCRIPTION OF SYMBOLS 1 Tank 2, 3 Vacuum heat insulation part 2a, 2b, 2c, 2d, 3a, 3b, 9b Vacuum heat insulation material 4, 5 Heat insulation material 6 Welding part 7 Reinforcement member 8 Sistern tank V Heat insulation part V1 Upper heat insulation part V2 Lower heat insulation Part V3 Top heat insulation part

Claims (8)

真空断熱部を備える断熱部がタンクの周囲に設けられる給湯機において、
前記断熱部は、タンクの高さ方向に沿って複数の領域に区分され、
前記断熱部を構成する複数の領域のうち上方の領域における真空断熱部は、それより下方の領域における真空断熱部に比べて厚く設定されることを特徴とする給湯機。
In a water heater in which a heat insulating part provided with a vacuum heat insulating part is provided around the tank,
The heat insulating portion is divided into a plurality of regions along the height direction of the tank,
Of the plurality of regions constituting the heat insulating portion, the vacuum heat insulating portion in the upper region is set thicker than the vacuum heat insulating portion in the lower region.
前記断熱部は、タンクの高さ方向上方に位置する上方の断熱部と、前記高さ方向下方に位置する下方の断熱部とに区分され、
前記上方の断熱部の真空断熱部は、下方の断熱部の真空断熱部に比べて厚く構成されることを特徴とする請求項1に記載の給湯機。
The heat insulating part is divided into an upper heat insulating part located above the tank in the height direction and a lower heat insulating part located below the height direction,
2. The water heater according to claim 1, wherein the vacuum heat insulating portion of the upper heat insulating portion is configured to be thicker than the vacuum heat insulating portion of the lower heat insulating portion.
前記上方の断熱部は、厚み方向に重なるように配置される複数の真空断熱材を有し、
前記下方の断熱部は、真空断熱材の数が前記上方の断熱部よりも少なく設定されることを特徴とする請求項2に記載の給湯機。
The upper heat insulating part has a plurality of vacuum heat insulating materials arranged to overlap in the thickness direction,
3. The water heater according to claim 2, wherein the lower heat insulating portion is set such that the number of vacuum heat insulating materials is smaller than that of the upper heat insulating portion.
前記真空断熱材とタンクとの間には、真空断熱材とは異なる断熱特性を有する断熱層が設けられることを特徴とする請求項2又は3に記載の給湯機。   The water heater according to claim 2 or 3, wherein a heat insulating layer having a heat insulating property different from that of the vacuum heat insulating material is provided between the vacuum heat insulating material and the tank. 前記真空断熱材とタンクとの間に設けられる断熱層は、真空断熱材とは異なる材質で構成される断熱材によって構成されることを特徴とする請求項4に記載の給湯機。   The water heater according to claim 4, wherein the heat insulating layer provided between the vacuum heat insulating material and the tank is formed of a heat insulating material made of a material different from the vacuum heat insulating material. 前記上方の断熱部を構成する複数の真空断熱材の間には、該真空断熱材とは異なる断熱特性を有する断熱層が設けられることを特徴とする請求項3〜5の何れか一項に記載の給湯機。   The heat insulating layer having a heat insulating property different from that of the vacuum heat insulating material is provided between the plurality of vacuum heat insulating materials constituting the upper heat insulating portion. The listed hot water heater. 前記複数の真空断熱材の間に設けられる断熱層は、真空断熱材とは異なる材質で構成される断熱材によって構成されることを特徴とする請求項6に記載の給湯機。   The water heater according to claim 6, wherein the heat insulating layer provided between the plurality of vacuum heat insulating materials is formed of a heat insulating material made of a material different from the vacuum heat insulating material. 前記タンクの下部の側壁が側方へ膨出するのを防止する補強部材を備え、
該補強部材は、前記下方の断熱部に対応させて配置されることを特徴とする請求項2〜7の何れか一項に記載の給湯機。
A reinforcing member for preventing the lower side wall of the tank from bulging sideways;
The hot water heater according to any one of claims 2 to 7, wherein the reinforcing member is disposed so as to correspond to the lower heat insulating portion.
JP2009166270A 2009-07-15 2009-07-15 Water heater Pending JP2011021793A (en)

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CN102393076A (en) * 2011-10-31 2012-03-28 本科电器有限公司 Water heater adopting vacuum insulation panel to insulate heat and preserve heat
JP2016003835A (en) * 2014-06-18 2016-01-12 三菱電機株式会社 Storage type water heater
JP2017096539A (en) * 2015-11-20 2017-06-01 三菱電機株式会社 Hot water storage type water heater

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CN102393076A (en) * 2011-10-31 2012-03-28 本科电器有限公司 Water heater adopting vacuum insulation panel to insulate heat and preserve heat
JP2016003835A (en) * 2014-06-18 2016-01-12 三菱電機株式会社 Storage type water heater
JP2017096539A (en) * 2015-11-20 2017-06-01 三菱電機株式会社 Hot water storage type water heater

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